Cirsium arizonicum Calflora

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Taxon Report

Cirsium arizonicum (A. Gray) Petr.

Arizona thistle

2016 Steve Matson

2020 David Greenberger

2016 Steve Matson

Cirsium arizonicum is a perennial herb that is native to California, and also found elsewhere in western North America.


	Plant Range Observation Search ~101 records in California Plant Characteristics

Bloom Period

Photos on Calflora


Subspecies and Varieties:
... var. arizonicum ... var. tenuisectum
Genus:	Cirsium
Family:	Asteraceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Wetlands:
Arid West: Occurs usually in non wetlands, occasionally in wetlands
Mountains, Valleys and Coast: Equally likely to occur in wetlands and non wetlands

Habitat: slopes

Communities: Subalpine Forest

Name Status:
Accepted by JEF + PLANTS + POWO

Alternate Names:


PLANTS	Cirsium arizonicum var. nidulum
OTHER	Cirsium eatonii
PLANTS	Cirsium nidulum
PLANTS	Cnicus arizonicus

Information about Cirsium arizonicum from other sources


Nursery availability from CNPLX Commercial availability unknown. Jepson eFlora USDA PLANTS Profile (CIAR3) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	ITIS Original Publication citation International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
photos / record / common / links

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 05/24/2025).